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Researchers in Singapore have come up with a funny idea: a smart window. It is called “liquid” and allows the sun’s rays to be filtered, in order to capture or release heat as needed. “This is the first smart liquid window. They say she’s smart because in summer she’ll automatically turn off the light, and in winter she’ll let in light to warm the house “, assures Long Yi, lecturer.

A window designed with hydrogel

The liquid inside the window is a hydrogel composition, which has the distinction of becoming opaque when heated, and transparent when at a low enough temperature. In buildings, windows are the weak point when it comes to saving energy. “About 20% of the total energy is lost through windows. This is why we have to implement this technology very quickly, because we believe that it can help reduce global warming “, details Long Yi.